Citadel Advisors
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Citadel Advisors’s ASP Isotopes ASPI Stock Holding History

Citadel Advisors’s Portfolio ASPI Stock Details ASPI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$3.6M Sell
579,400
-135,100
-19% -$795K ﹤0.01% 5317
2026
Q1 		$3.16M Buy
714,500
+82,000
+13% +$485K ﹤0.01% 5168
2025
Q4 		$3.38M Buy
632,500
+120,700
+24% +$960K ﹤0.01% 4945
2025
Q3 		$4.92M Buy
511,800
+43,300
+9% +$399K ﹤0.01% 4393
2025
Q2 		$3.45M Buy
468,500
+277,200
+145% +$1.86M ﹤0.01% 4737
2025
Q1 		$897K Buy
191,300
+58,000
+44% +$289K ﹤0.01% 7206
2024
Q4 		$604K Buy
+133,300
New +$710K ﹤0.01% 8144

Other funds holding ASPI

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
ECA
Encompass Capital Advisors New York $2.81B AUM 198.36% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
RIM
Rovida Investment Management Grand Cayman, Cayman Islands $1.47B AUM 142.45% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $38.9B AUM 28.51% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
ETC
Exchange Traded Concepts Oklahoma City, Oklahoma $21.9B AUM 68.6% 1-Year Est. Return
AIC
AWM Investment Company New York $1.15B AUM 201.65% 1-Year Est. Return

Citadel Advisors's ASPI Position: Q2 2026 in Review

Citadel Advisors reduced its ASP Isotopes (ASPI) stake by 53% in Q2 2026, selling an estimated $2.42M and leaving 357,591 shares worth $2.22M. The position accounts for ﹤0.01% of the portfolio, ranked #6317.

Citadel Advisors first reported a position in ASPI in Q4 2023 and has held it in 7 quarters since. The position peaked at $11.2M in Q3 2025. 185 funds tracked by Wall St. Rank hold ASPI as of Q2 2026.

  • Citadel Advisors held 357,591 shares of ASP Isotopes worth $2.22M as of Q2 2026.
  • Citadel Advisors sold 410,415 ASP Isotopes shares in Q2 2026, an estimated $2.42M.
  • ASP Isotopes made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #6317 holding.
  • Citadel Advisors first reported a position in ASP Isotopes in Q4 2023 and has held it in 7 quarters since.
  • Citadel Advisors's ASP Isotopes position peaked at $11.2M in Q3 2025.
  • 185 funds tracked by Wall St. Rank held ASP Isotopes as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.